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Description:
Our SAE flanges ex-stock in Singapore are made to SAE J518 / ISO 6162 standards. SAE flanges are used in oil hydraulic systems. SAE flanges are also known as SAE Code 61 Flanges or SAE Code 62 Flanges. Code 61 represents 3000 PSI working pressure, while Code 62 represents 6000 PSI working pressure. SAE Flanges are available with an o-ring side, flat side, or a complete set, depending on the hydraulic system requirements. The materials used to fabricate SAE flanges are steel and stainless steel. There are four common types of connection for SAE flanges: socket weld, butt weld, NPT, and BSPP. |
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Different Connections of SAE Flanges
Product Information of SAE Flanges
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1. Specifications:
SAE flange is a hydraulic flange made in accordance with SAE J518 / ISO 6162 standards. SAE flanges are normally supplied for oil hydraulic systems in extensive range such as mining, shipbuilding, mobile hydraulic systems and oil & gas. The acronym ‘SAE' stands for the Society of Automotive Engineers, a group founded in 1905 to set standards for numerous sectors in the engineering area. The flange includes 4 bolt connection holes and is widely used around the world. There are several bolt grades that are matched to install in equipment:
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Socket Weld SS316 SAE Flanges 6000#
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2. Material:
SAE Flanges are manufactured from two kinds of material, steel ST52.3 and stainless steel AISI SS316L. In order for SAE flanges to be able to be used for high pressure applications, the SAE flange bodies have to be made from normalized forgings.
SAE Flanges are manufactured from two kinds of material, steel ST52.3 and stainless steel AISI SS316L. In order for SAE flanges to be able to be used for high pressure applications, the SAE flange bodies have to be made from normalized forgings.
3. Size Range:
SAE flange are available in nominal sizes ranged from 3/8"NB (DN10) to 5"NB (DN125). The pressure rating of SAE flange can be defined to two series: Code 61 Series and Code 62 Series.
SAE flange are available in nominal sizes ranged from 3/8"NB (DN10) to 5"NB (DN125). The pressure rating of SAE flange can be defined to two series: Code 61 Series and Code 62 Series.
Butt Weld SS316 SAE Flanges 3000# O-ring Side
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4. Pressure Rating:
The maximum working pressure for Code 61 series are ranges from 34 Bar to 345 Bar, depending on the sizes. For Code 62 series, the maximum working pressure are 414 Bar. However, the pressure rating of SAE flanges and connected equipment combination might vary from each other. For example: if a pipe connected to the flange has a lower maximum working pressure, it will result in an overall lower working pressure of the system. Therefore in a system, the item with the lowest pressure will be the maximum working pressure of the system. |
5. Connections Type & Configurations:
For the connections of SAE flanges, it is usually available in several types: threaded (NPT / BSPP), welding (Socket Weld / Butt Weld), blind flanges, and split flanges.
SAE flanges are available in two types: Flat Side and O-ring Side. Flat side of SAE flange are SAE flange that come with bolt thread (UNC / Metric) and O-ring side of SAE flange are SAE flange that contains a groove seat to place a rubber O-ring. Flanges with O-ring are has an advantage of prevent leakage as all metal-to-metal flanges are more prone to leakage.
The configurations of SAE flanges are flat side, O-ring side or complete set. A complete set of SAE flanges are a combination of flat side and O-ring side where it forms a seal between the flat surface and O-ring held in a recessed circular groove in the other half. By tightening the bolts, it draws the flat side and O-ring side together and compresses the O-ring.
SAE flange complete set is tightened by using socket head cap screws and spring washers according to the recommended torque value. According to the SAE J518 standard, the lengths of cap screws are usually shorter than the overall length of the SAE flange complete set.
For the connections of SAE flanges, it is usually available in several types: threaded (NPT / BSPP), welding (Socket Weld / Butt Weld), blind flanges, and split flanges.
SAE flanges are available in two types: Flat Side and O-ring Side. Flat side of SAE flange are SAE flange that come with bolt thread (UNC / Metric) and O-ring side of SAE flange are SAE flange that contains a groove seat to place a rubber O-ring. Flanges with O-ring are has an advantage of prevent leakage as all metal-to-metal flanges are more prone to leakage.
The configurations of SAE flanges are flat side, O-ring side or complete set. A complete set of SAE flanges are a combination of flat side and O-ring side where it forms a seal between the flat surface and O-ring held in a recessed circular groove in the other half. By tightening the bolts, it draws the flat side and O-ring side together and compresses the O-ring.
SAE flange complete set is tightened by using socket head cap screws and spring washers according to the recommended torque value. According to the SAE J518 standard, the lengths of cap screws are usually shorter than the overall length of the SAE flange complete set.
6. Differences between Code 61 and 62 flanges:
SAE Flanges are built in two different code designs which are code 61 and code 62. The following is a summary table:
SAE Flanges are built in two different code designs which are code 61 and code 62. The following is a summary table:
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Butt Weld SS316 SAE Flanges 3000# Flat Side
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7. Types of O-ring sealing used:
It is a static face seal that seals the flange with a high durometer O-ring. Metal-to-metal interactions on the flange's outer face will produce leakage. As a result, the O-ring sealing is compressed between the flat face and the O-ring face, resulting in a reliable soft sealing. Flanges utilize an O-ring to seal a connection and keep pressurized fluid in place. The following table is the materials used for seals of flanges:
It is a static face seal that seals the flange with a high durometer O-ring. Metal-to-metal interactions on the flange's outer face will produce leakage. As a result, the O-ring sealing is compressed between the flat face and the O-ring face, resulting in a reliable soft sealing. Flanges utilize an O-ring to seal a connection and keep pressurized fluid in place. The following table is the materials used for seals of flanges:
Description |
Viton 90 |
NBR 70 / 90 |
Equivalent |
FKM |
BUNA-N |
Temperature Range (⁰C) |
-26 ⁰C to 205 ⁰C |
-34 ⁰C to 121 ⁰C |
Non-Recommended Application |
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Recommended Application |
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8. How to assemble SAE Flanges:
SAE Flanges are used for high pressure hydraulic applications. In order to use and assemble SAE Flanges safely, it is important to know the right procedures and torque range for assembly. Because of the high pressure, it is important to note that every hydraulic or pneumatic system requires some form of fitting installation for completion. Proper fabrication and installation are essential for leak free performance, the overall efficiency, and general appearance of any system. Do watch our YouTube video and our instructions below carefully! |
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Below are the instructions for assembly of SAE Flanges:
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STEP 1
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STEP 2
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STEP 3
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STEP 4
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3000 PSI Series (Code 61) Flange Recommended Screw Torque Table
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6000 PSI Series (Code 62) Flange Recommended Screw Torque Table
* Tolerance: max. 10%, min. 0%
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Product Catalogue in PDF:
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Product Literature in PDF:
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Assemble SAE Flanges in pdf:
SAE Flanges Assembly Instructions
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FAQ Of SAE Flanges
What is the size range of hydraulic SAE flanges?
The size range of hydraulic SAE flanges is from 3/8 inches to 5 inches.
What are the functions of hydraulic SAE flanges?
SAE Flanges also can be applied to connect pipe, hose, tube, or equipment. It can connect
pipe sizes up to 5 inch and ease of disassembly through use of split flange.
pipe sizes up to 5 inch and ease of disassembly through use of split flange.
What are the differences between the 4-bolt hydraulic sae flanges?
Bolt grade 8.8: Yellow zinc as standard material furnished with carbon steel flange.
Bolt grade 10.9: FIZn 240h L suitable for higher temperature application, available upon request.
Bolt grade SS304: Standard material furnished with stainless steel flange.
Bolt grade SS316: Higher corrosion resistance, available upon request.
Bolt grade 10.9: FIZn 240h L suitable for higher temperature application, available upon request.
Bolt grade SS304: Standard material furnished with stainless steel flange.
Bolt grade SS316: Higher corrosion resistance, available upon request.
Which type of O-rings are used for hydraulic flanges?
O-ring sealing. It is compressed between the flat face and O-ring face, providing a reliable soft sealing.
What is the working pressure for code 61 and code 62 flanges?
The working pressure of code 61 flanges is from 34 to 345 bar while code 62 flanges is from 200 to 414 bar.
What types of connection can be used for hydraulic sae flanges attached to pipes?
Threaded end (NPT or BSPP) and welding end (socket weld or butt weld).
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